Research on the Cascaded Suppression Method of Blanket Jamming in Satellite Navigation Receivers

This paper investigates a novel suppression method of blanket jamming based on concatenation structure. The narrowband blanket jamming and wideband blanket jamming are suppressed in different stages. First the narrowband blanket jamming is eliminated using an adaptive IIR lattice notch filter with a simple architecture. Then the wideband blanket jamming can be cancelled using the power inversion algorithm with less antennas and less delay taps. The simulation results show that the proposed method has less computation complexity and better anti-jam performance compared with the method of just using space-time adaptive processing. Meanwhile, the flexibility, the real time property and the suppression performance of blanket jamming are improved.